Resources Contact Us Home
Control apparatus of internal combustion engine

Image Number 15 for United States Patent #7284367.

The ignition timing is sustained at an initial value during a predetermined time beginning at a start of an engine, and is retarded after the predetermined time is elapsed to heat a catalyst at an early time. The predetermined time ends when the negative pressure of an intake pipe or the negative pressure of a brake booster reaches to a predetermined value. That is, the predetermined time is a period, which begins at a start of the engine and ends when a proper negative pressure can be sustained in the brake booster. As a result, it is possible to assure a negative pressure in the brake booster at an early time and to reduce exhaust emission at a start of the engine simultaneously.

  Recently Added Patents
Semiconductor device and method of forming interconnect structure with conductive pads having expanded interconnect surface area for enhanced interconnection properties
Alterable account number
Method and system for monitoring and treating hemodynamic parameters
Transistor and display device
Enediyne compounds, conjugates thereof, and uses and methods therefor
Electronic time stamping apparatus for use with an inground transmitter
Display device and method of repairing display device
  Randomly Featured Patents
Remote authorization for unlocking electronic data system and method
Fixing mount for an upper beam of venetian blind
Method of producing polyurea foams
High voltage protection circuit for a television receiver
Material analysis using reflected light
Backlight dimming and LCD amplitude boost
Iso-parallel UPS system configuration
Derivatives of 3-piperidine carbaldehyde oxime and their use as medicaments
Throttle body assembly
Boundary test scheme for an intelligent device